// <copyright file="PinnedScript.cs" company="Selenium Committers">
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// to you under the Apache License, Version 2.0 (the
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// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
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using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using OpenQA.Selenium.Internal;

namespace OpenQA.Selenium;

/// <summary>
/// A class representing a pinned JavaScript function that can be repeatedly called
/// without sending the entire script across the wire for every execution.
/// </summary>
public sealed class PinnedScript
{
    /// <summary>
    /// Initializes a new instance of the <see cref="PinnedScript"/> class.
    /// </summary>
    /// <param name="script">The body of the JavaScript function to pin.</param>
    /// <param name="stringHandle">The unique handle for this pinned script.</param>
    /// <param name="scriptId">The internal ID of this script.</param>
    /// <remarks>
    /// This constructor is explicitly internal. Creation of pinned script objects
    /// is strictly the purview of Selenium, and should not be required by external
    /// libraries.
    /// </remarks>
    internal PinnedScript(string script, string stringHandle, string scriptId)
    {
        this.Source = script;
        this.Handle = stringHandle;
        this.ScriptId = scriptId;
    }

    /// <summary>
    /// Gets the unique handle for this pinned script.
    /// </summary>
    public string Handle { get; }

    /// <summary>
    /// Gets the source representing the body of the function in the pinned script.
    /// </summary>
    [StringSyntax(StringSyntaxConstants.JavaScript)]
    public string Source { get; }

    internal static string MakeCreationScript(string scriptHandle, string scriptSource)
    {
        return string.Format(CultureInfo.InvariantCulture, "function __webdriver_{0}(arguments) {{ {1} }}", scriptHandle, scriptSource);
    }

    /// <summary>
    /// Gets the script used to execute the pinned script in the browser.
    /// </summary>
    internal string MakeExecutionScript()
    {
        return string.Format(CultureInfo.InvariantCulture, "return __webdriver_{0}(arguments)", this.Handle);
    }

    /// <summary>
    /// Gets the script used to remove the pinned script from the browser.
    /// </summary>
    internal string MakeRemovalScript()
    {
        return string.Format(CultureInfo.InvariantCulture, "__webdriver_{0} = undefined", this.Handle);
    }

    /// <summary>
    /// Gets or sets the ID of this script.
    /// </summary>
    internal string ScriptId { get; }
}
